Door and lock therefor.



W. H. LUDWIG. DOOR AND LOCK THEREFOR. unmmxon nun mm: 10, 1910.

Patentd Dec.2'?,1910.

Attorneys nnrrnn srarn WILLIAM H. LUDVTIG, OF DE PER-E, WISCONSIN.

DOOR AND LOOK THEREFOR.

Specification of Letters Patent.

Patented Dec. 27, 1am.

Application filed June 10, 1910. Serial No. 966,198.

To all whom it-may concern:

Be it known that 1, WILLIAM H. LUDWIG, a. citizen of the United States, residing at De Pere in the county of Brown and State of Wisconsin, ful Door and Lock Therefor. of which the following is a specification.

This invention relates to doors for silos, refrigerators, and the like constructed of wood, stone, concrete or other material, and

relates, more particularly, to means whereby the separate members of a sectional door can be securely fastened in position, the fastening means being simple and'dura-ble in construction and easy to operate.

A further object is to provide a sectional door having fastening means so constructed and arranged as to permit any one of the sections to be moved without necessitating the displacement of the remaining sections.

A still further object is to provide fastening device which allows for the expansion or contraction of the material constituting the door structure without causing displacement of any parts of the; fastener used in connection with the door.

A still further object is to provide a fastener, one of the members of which constituros a handle whereby the door section to which it is connected may bei conveniently carried.

With these and other objects in view the invention consists in ceratin novel details of construction and combination of parts l'iereinafi'er more fully described and pointed out in the claims. i y

In the accompanying drawin the preferred forms of ,the invention have been shown.

In said drawings :--F igure '1 is an elevation of a portionof a silo having the. presentimprovements applied thereto. central. vertical section tln'ough u poirtion of the door shown in Fig. 1. Fig. 3 is A section through a modified form of the door. Fig. {1- is'a section through another loi'ifn of door. Fig. 5 is a horizontal section through a portion of a concrete silo and showing the door in position within the opening. Fig. (3 is a view similar to Fig. 5 and showing the door arranged in a different way.

l'tcl'erring lo the figures by characters of have invented a new and use- Fig. is a reference 1 designates the side strips of the door of a silo 2, these strips being connected at desired intervals by cross rods 3 forming tllie ruin'gs of a ladder such as commonly emp oye The door for closing the silo is formed of va plurality of similar sections each of which has been designated by the numeral 4. The upper and lower edges of each section are .beveled as shown at 5 and disposed in parallel planes, there being cleats 6 upon one face of each section and adapted to fit snugly against the side strips 1, the cleats on each section terminating below the uppercbeveled edge 5 but extending below the lower beveled edge. A. bail shaped keeper 7 issccurcd upon the upper portion of each section 4 at points between the cleats (3, said keeper being preferably inclined relativetb the adjoining rung as clearly indicated in Fig. 1, a portion of the keeper extending above the rung while another portion thereof extends therebelow.

Mounted on each of the rungs 3 isa spiral catch 8 adapted to. rotate upon the rung and to also slide thereon. Thefree end of this catch is adapted. when the catch is rotated in one direction, to enter into engagement -with the keeper- 7 and draw it outward toward the rang, thus binding the door section tightly against the side strips or .frame 1 and also downward tightly against. the top end of the adjoining lower door section. By

having the keeper 7 inclined as shown and described and by mounting the'catchso' as to slide onthe rung 3, said catch can be shifted upon the rung so as to engage the keeper. at the point where it crosses the rung, thus allowing for any'expansion or contraction of the door sections which may occur as the result of seasonlng or variations in climatic conditions. It will be seen that the fasteners 8 engage keepers connected to the upper end portions of the door sections and. thus hold said end portions in place, while the lower end portions of said 'sections are held by the cleats 6 which lap the adjoining sections 4 as'clearly indicated in Fig. 2.

Obviously any one of the sections 4 can be removed simply by disconnecting its fastener 8 from its keeper 7 and then tilting :carried. andswung back in place as'the silo is emptied; I Instead of beveling the'do'or sections as shown in Fig. '2 said sections can have their upper 'and' lower sections cut off square as indicated at 94in Fig. 301, if preferred, said edges may be stepped as shown at in'Fig.

- 4. In every' instance, however, the cleats are of. stoneor concrete the door frame or strips used in" connection wlth a wooden structure "R0ds'12, extend. transversely of the opening wi thin the wall of the structure.

" ferred, and as shown in-F g. 6, the recesses -arr'an ged,to lap the sections thereunder next adoining thern. Y hegsilo or other structure 18 formed are dispensed with and, instead, longitudinal-recesses or seats 11 are formed" in the sides of'the door openin and the doors 4 are'adapted to rest within these recesses.

and have bent cr-hooked ends 13 embedded If preli -may be dispensed with and thedoor sections drawn againstthe inner surface of the structure, it being understood that gaskets or other suitable packing devices may be in- *te1'=po'sed=betwwen the door and the wall of the structure, as indicated at 14.

While the door and fastener have been described as particularly designed for use in connection with silos, it is to be understood that they can bev used wherever itmay be de "sired; to employ a door made up of a series of sections to be separately removed.

Variousv changes may be made in the construction and arrangement'of the parts without departing from tlie'spirit or sacrificing tiny 'of'the advantages of the invention as defined in;ihc appended claims.

l Vhat'is claimed is:

l. The combination witha door' having lappingsections, of a keeper upon each section,- andva spiral catch revoluble into'engagement' with the keeper.

2. The comblnation with a door consisting oflappingscct ons, of a keeper upon each section and a spiral catch mounted to slide to hold one end of the door against displace- -and;=rotate.

7-3.}The combination with a door, and means thereon for lapping a fixed structure ment. of a'keeper upon the door, and rev- =olublemeans for engaging the keeper to bind-the door in closed position. .60-

4, The combination with a door, and means extending therebeyond for lapping a fixed structure to hold one end of the door, of akeeper upon the other'end of the door,

, relative to the 'ment to engage the-keeper. 3 8. The combination with and spiralmeaxis' forfengaging the keeper to securethe door in closed posltion. 1

I 5. The combination with a removable door,

of a supporting element, a spiral fastener slidably and rev'olubly mounted-0n said ele' engagement by the fastener,

6; Thecombination wlth a and revolubly mounted on said element, and.

a keeper secured to the door and inclined element for engagement'by the fastener.

7. The combination with door and cleats thereon project ng beyond one end of the door for engaging a relatively fixed structure, of a keeper upon the opposite end of the door, a supporting element, anda spiral fastener mounted for rotation [on said ele a structure hav-' ing a door opening, and super osed rungs extending across the opening, of doorforclosing the opening, a section lapping one of the adjoining sections, a keeper upon each section, and a direct connection between each rung and the adj oining-keeper. 9. The combination with a structure having a door opening, and rungs extending across the opening and constituting a ladder, of a door consisting of lapping sections, a keeper upon each section, and spiral fasteners mounted for rotation upon the rungs and shiftable into engagementwith the keepers.

10. The combination with a structure having a door opening, of a ladder rung extending-across the opening, a door, a keeper upon the door, and a direct connection between each rung and its adjacent keeper, said connection being revoluble to engage the keeper. i

11. The combination witha structure having a dooropening, and a rungvextending across the opening, of a door, a keeper secured to the door and inclined relative to the rung and a spiral fastener slidably and revolubly mountcd'on the rung for engaging the keeper. r i

' 12. The combination with a door, of a keeper upon the door, and a catch revoluble toward the door and into engagement with the keeper. p

13. The combination with a sectional door, of a keeper upon each section, and a catch revoluble toward the door and into engagement with each keeper. r

14:. The combinatlon with structure having a door opening, and rungs extending a sectional across the openlng, of a door, a keeper upon the door, and means revoluble upon one of the uugs for engaging the keeper.

15 The combination with a structurehaving a door opening, and a rung extending as my own, I have hereto aflixed my signancross the openmg, of a door, an element on ture 1n the presence of two wltnesses.

the door, and a revoluble device constituting a direct connection between the rung WILLIAM LUDVVIGI, 5 and element and for drawing the door to- Witnesses:

ward the rung. HERB. J. SMITH,

In testimony that I claim the foregoing ARTHUR J. ALTMAYER. 

